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#5601 2017-11-17 21:36:59

ganesh
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Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3834 is correct. Excellent, Monox D. I-Fly!

#3835. If the median of the data : 6, 7, x - 2, x, 17, 20 written in ascending order, is 16. Find the value of x.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5602 2017-11-19 18:05:14

ganesh
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Posts: 23,463

Re: Oral puzzles

Hi,

#3836. Find the median of the first 10 prime numbers.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5603 2017-11-19 21:24:48

Monox D. I-Fly
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Posts: 952

Re: Oral puzzles

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#5604 2017-11-19 22:36:22

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3836 is correct. Excellent, Monox D. I-Fly!

#3837. If the mode of the data : 64, 60, 48, x, 43, 48, 43, 34, and 43 is 43, find the value of x + 3.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5605 2017-11-23 00:31:11

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3838. If 35 is removed by the data : 30, 34, 35, 36, 37, 38, 39, 40, then them median decreases by how much?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5606 2017-11-23 12:41:26

Monox D. I-Fly
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Posts: 952

Re: Oral puzzles

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#5607 2017-11-23 13:51:42

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3838 is correct. Excellent, Monox D. I-Fly!

#3839. If the arithmetic mean of 7, 8, x, 11, 14 is x, find the value of x.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5608 2017-11-25 00:27:14

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3840. If the mean of first n natural numbers is 15, find n.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5609 2017-11-27 02:19:46

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3840. If the mode of the series exceeds by 12 then the mode the median by ______.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5610 2017-11-29 00:36:55

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3841. If the Arithmetic Mean and Mode of a data are 24 and 12 respectively, find the median.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5611 2017-11-30 14:08:36

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3842. If the difference of mode and median of a data is 24, then find the difference of median and mean.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5612 2017-12-03 17:26:34

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3843. Find the value of n if the mean of first n natural numbers is

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5613 2017-12-05 00:20:39

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3844. Calculate the mean of the following distribution:
x:    5   6   7     8     9
f :    4   8   14   11   3


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5614 2017-12-07 00:52:55

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3845. Solve:

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5615 2017-12-07 13:14:42

Monox D. I-Fly
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Registered: 2015-12-02
Posts: 952

Re: Oral puzzles

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#5616 2017-12-07 13:57:06

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3845 is correct. Good work, Monox D. I-Fly!

#3846. A passenger train takes 3 hours less for a journey of 360 kilometers, if its speed is increased by 10 kilometers per hour from its usual speed. What is the usual speed?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5617 2017-12-07 14:43:12

Monox D. I-Fly
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Registered: 2015-12-02
Posts: 952

Re: Oral puzzles

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#5618 2017-12-07 15:32:11

ganesh
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Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3846 is correct. Excellent, Monox D. I-Fly!

#3847. A fast train take one hour less than a slow train for a journey of 200 kilometers. If the speed of the slow train is 10 kilometers per hour than that of the fast train, find the speed of the two trains.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5619 2017-12-07 18:19:07

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 952

Re: Oral puzzles

Last edited by Monox D. I-Fly (2017-12-07 18:19:26)

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#5620 2017-12-07 18:39:56

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3847 (two parts) is correct. Excellent, Monox D. I-Fly!

#3848. An airplane takes 1 hour less for a journey of 1200 kilometers if its speed is increased by 100 kilometers per hour from its usual speed. Find its usual speed.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5621 2017-12-09 00:22:14

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

#3849. The hypotenuse of a grassy land in the shape of a right triangle is 1 meter more than twice the shortest side. If the third side is 7 meters more than the shortest side, find the sides of the grassy land.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5622 2017-12-10 12:53:33

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 952

Re: Oral puzzles

Last edited by Monox D. I-Fly (2017-12-10 12:54:03)

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#5623 2017-12-10 15:34:55

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3849 (three values) is correct. Excellent, Monox D. I-Fly!

#3850. Find the values of k for which the quadratic equation

has real and equal roots.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#5624 2017-12-10 17:32:59

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 952

Re: Oral puzzles

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#5625 2017-12-10 18:43:40

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,463

Re: Oral puzzles

Hi,

The solution #3850 (two values) is correct. Keep it up, Monox D. I-Fly!

#3851. If one root of the equation

is 2, then find the other root.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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